package com.kitty.common.thread;

import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;

import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

//import com.kitty.common.thread.VisiableThreadPoolTaskExecutor;


@Configuration
@EnableAsync
@Slf4j
public class ExecutorConfig {


    @Bean
    public Executor asyncServiceExecutor() {
        log.info("start asyncServiceExecutor");
        int processors = Runtime.getRuntime().availableProcessors();
        ThreadPoolTaskExecutor executor = new VisiableThreadPoolTaskExecutor();
        /*配置核心线程数*/
        executor.setCorePoolSize(processors);
        /*配置最大线程数*/
        executor.setMaxPoolSize(processors * 20);
        /*配置队列大小*/
        executor.setQueueCapacity(99999);
        /*配置线程池中的线程的名称前缀*/
        executor.setThreadNamePrefix("async-springboot-thread-");

        /* rejection-policy：当pool已经达到max size的时候，如何处理新任务*/
        /* CALLER_RUNS：不在新线程中执行任务，而是有调用者所在的线程来执行*/
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        /*执行初始化*/
        executor.initialize();
        return executor;
    }
}
